Understanding SEEPEX technology

Since SEEPEX’s founding in 1972, we have been bringing fully-developed innovative technology to the market. Our numerous progressive cavity pump patents prove our capability and our ability to make ALL THINGS FLOW.

We’re moving forward by continuously exploring new breakthroughs and focusing on theoretical research, product development and information technology. Sound interesting? Examine the basic principles behind our mechanics with us.


SEEPEX progressive cavity pumps belong to the group of rotary positive displacement pumps.

  • Two conveying elements with special geometry
  • Off-center rotary motion

The geometry of rotor and stator forms enclosed cavities. The rotary movement of the rotor transfers the medium from the suction to the pressure side.

  • Self priming, high suction lift
  • High discharge pressures
  • Flow almost independent of system pressures
  • Direction of rotation reversible
  • Continuous flow, low pulsation




SEEPEX rotors and stators meet the highest quality requirements and guarantee high efficiency. Less wear and good corrosion resistance minimize operating costs and ensure a long service life. They follow certain prerequisites: optimized surfaces, high-precision geometries, customizable materials, and application-specific sizing and coating.

  • High surface grade
  • Adapted materials
  • High surface hardness
  • Integrated seal
  • Large range of materials
  • High pressure stability
  • Optimal efficiency due to optimized rotor surface
  • Energy efficient due to reduced starting and operating torques
  • Low emissions due to reduced surface roughness
  • Long service life due to perfectly matched components


The SEEPEX tenet: we develop customized solutions for the various needs and requirements of our customers. That is why we also supply tailor-made rotor/stator geometries that are designed exactly for the required conveying capacity, pressure and conveying product.

  • Optimum performance
  • Low operating costs
  • Quick return on investment
  • Long pump service life
  • Modular system: all geometries interchangeable


SEEPEX 6L geometry enables lower surface velocities with its small rotor diameter and longer pitch length while also extending surface life due to a larger sealing line.

  • Improved efficiency
  • Lower axial forces
  • Less wear, longer service life
  • Specifically suitable for easy-flowing products
  • Pressure: up to 6 bar (90 PSI)


With smaller pitches and a compact design, the conventional SEEPEX geometry achieves high system pressures.

  • Extremely versatile, suitable for practically any application
  • Specifically designed for highly viscous products
  • Pressure: up to 48 bar (720 PSI)


The SEEPEX tricam-geometry attains higher conveying capacities with the same pump length thanks to its higher number of helices. With the longer 6LT or the shorter 12T design, the SEEPEX benefits will be achieved at higher flow rates.

  • Increased conveying capacity by 50%
  • Even at higher pressures
  • Easy conversion from 6L or conventional to tricam geometry


SEEPEX progressive cavity pumps are equipped with robust and easy-to-install pin joints. Hermetically sealed universal joint sleeves ensure a smooth operation, even at extreme temperatures or when handling abrasive products.

  • Made of wear-resistant, hardened and easy-to-replace components
  • Fastened with a retaining sleeve
  • Completely filled with special grease
  • Hermetically sealed with an elastic universal joint sleeve
  • Variety of universal joint sleeve materials offered along with further options for trouble-free operation
  • The universal joint sleeve offers effective protection against mechanical damage
  • Quick and easy dismantling reduces service time and effort
  • SEEPEX guarantees 10,000 operating hours on joints with the optional "universal joint protection" design

Smart Seal Housing

Smart Seal Housing (SSH) is the latest development of Smart Conveying Technology (SCT). This technical innovation provides the quickest and simplest maintenance, enabling the mechanical seal to be changed without the need to remove the pipework or suction casing.

Traditionally, when mechanical seals need replacing, the pipe work and pump suction casing have to be removed to gain access to the seal housing. This is a time consuming process, which has now been minimized with Smart Seal Housing (SSH).

Smart Seal Housing (SSH) is available as an option for Smart Conveying Technology (SCT) pumps.

  • Split seal housing
  • Enables removal of stationary seat through lantern for full seal replacement
  • Can be retro-fitted on existing pump or supplied as option on new pump
  • Suitable for standard single acting mechanical seals
  • Patent pending
  • Suction casing and suction pipe do not have to be dismantled
  • Reduced ‘down time’ to change the mechanical seal
  • Ease of fitting mechanical seal stationary seat
  • Easy access to the drive- and stator-sided joint
  • Reduced maintenance costs


Drive Joint Access (DJA) is an intelligent concept for the maintenance of drive-side components.

A sliding joint housing mounted on rollers between the intake hopper and the protective frame of hopper pumps allows quick access to the joint on the drive side. The plug-in shaft and drive can therefore be installed or removed within a few minutes without having to remove the piping, the intake hopper or the screw conveyor. 

On large standard pumps, the complete drive and coupling rod assembly can be easily removed from the back of the suction casing to service the mechanical seal or joints. Removing the piping or dismantling the rotor and stator is not required either.

  • For hopper pumps: Sliding joint housing between intake hopper and protective frame

  • For large standard pumps: Detachable drive and coupling rod assembly from the back of the suction casing

  • Maintenance using standard tools possible

  • Maintain in Place possible
    • No need to dismantle the pipes or the entire pump
  • Drastically reduced maintenance times and costs
    • Easy access to wearing parts without dismantling the entire pump
  • Preventive maintenance
    • Regular, simple inspection and maintenance of the joint 
  • Increased uptime
    • Scheduled, simple inspection and maintenance of drive-side parts for trouble-free operation




The intelligent Rotor Joint Access maintenance concept gives you quick and easy access to the rotor-side joint on hopper pumps and large standard pumps

Thanks to a sliding housing section mounted on rollers, it is possible to reach the rotor-side joint quickly and easily. This means that the stator can be easily removed without having to dismantle the pressure branches or piping. This simplifies servicing work and reduces the pump downtime due to maintenance drastically.

  • Rotor-side sliding housing section
  • Maintenance using standard tools possible


  • Maintain in Place possible
    • It is not necessary to dismantle the piping or the entire pump
  • Drastically reduced maintenance times and costs
    • Easy access to wearing parts without dismantling the entire pump
  • Preventive maintenance
    • Regular, simple inspection of the joint is possible
  • Increased uptime
    • Scheduled, simple inspection and maintenance of drive-side parts for trouble-free operation